Cisco 3524XL Hardware Installation Guide - Page 91

Straight-Through Cable, Catalyst 3508

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Chapter 3 Troubleshooting Diagnosing Problems Table 3-2 Common Problems and Their Solutions (continued) Symptom No connectivity. Unreadable characters on the management console. System LED is amber on the Catalyst 3508, 3512, or 3524 XL switch. Possible Cause Incorrect or bad cable. The following are indicated by no link at both ends: • A crossover cable was used when a straight-through was required, or vice-versa. • The cable is wired incorrectly. • STP checking for possible loops. Incorrect baud rate. Nonfatal or fatal POST error detected. Resolution • For the correct pinouts and the proper application of crossover vs. straight-through cables, see the "Crossover and Straight-Through Cable Pinouts" section on page B-4. • Replace with a tested good cable. • Wait 30 seconds for LED to turn green. Reset the emulation software to 9600 baud. Use the show POST command to see which POST test failed. 78-6456-03 Catalyst 3500 Series XL Hardware Installation Guide 3-5

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3-5
Catalyst 3500 Series XL Hardware Installation Guide
78-6456-03
Chapter 3
Troubleshooting
Diagnosing Problems
No connectivity.
Incorrect or bad cable.
The following are indicated by no
link at both ends:
•
A crossover cable was used
when a straight-through was
required, or vice-versa.
•
The cable is wired incorrectly.
•
STP checking for possible
loops.
•
For the correct pinouts and
the proper application of
crossover vs.
straight-through cables, see
the “Crossover and
Straight-Through Cable
Pinouts” section on
page B-4.
•
Replace with a tested good
cable.
•
Wait 30 seconds for LED to
turn green.
Unreadable characters on the
management console.
Incorrect baud rate.
Reset the emulation software to
9600 baud.
System LED is amber on the
Catalyst 3508, 3512, or 3524 XL
switch.
Nonfatal or fatal POST error
detected.
Use the
show POST
command
to see which POST test failed.
Table 3-2
Common Problems and Their Solutions (continued)
Symptom
Possible Cause
Resolution